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Questions and Answers

Which factor determines the effective focal length of a lens on a crop-frame sensor?

Resolution

Crop factor (correct)

Focal length

Sensor type

Why is a wider aperture lens considered faster in photography?

It increases chromatic aberration

It reduces lens distortion

It creates shallower depth of field

It facilitates faster shutter speeds (correct)

Which sensor type is known for its lower power consumption and higher integration capability?

Full-frame sensor

CMOS sensor (correct)

CCD sensor

Macro sensor

What visual defect in images is characterized by a bulging effect near the edges of the frame?

Barrel distortion Signup and view all the answers

What type of noise is often described as speckles or graininess in digital photographs?

Luminance noise Signup and view all the answers

What is the purpose of an 18%-grey card in photography?

To calibrate incident light metering Signup and view all the answers

What effect does a wider aperture have on shutter speeds in photography?

Facilitates faster shutter speeds Signup and view all the answers

Which type of distortion is characterized by a bulging effect near the edges of the frame in images?

Barrel distortion Signup and view all the answers

What is the formula to calculate the effective focal length on a crop-frame sensor?

Effective focal length = focal length x crop factor Signup and view all the answers

Which type of lenses may vary their focal length over the range in cheaper models?

Zoom lenses Signup and view all the answers

What is the purpose of a 18%-grey card in photography?

To set the correct exposure in difficult lighting conditions Signup and view all the answers

Which type of sensor is known for its better power efficiency and integration capability?

CMOS sensor Signup and view all the answers